<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Button</title>
    <link href="css/core/reset.css" rel="stylesheet" type="text/css">
    <link href="css/core/button.css" rel="stylesheet" type="text/css">
</head>
<body>

<a class="button">普通按钮</a>
<button class="button">普通按钮</button>
<a class="button-secondary">次级按钮</a>
<button class="button-secondary">次级按钮</button>
</body>
</html>